the only thing i can think of is when wolvie had his admanitum removed the first time, he was then known as feral wolverine, but the cool thing was he was in berserker mode most of the time, its the thing he always talks about how he doesnt want to slip into the "red"(not to be confused with the DCU animal kingdom) so sage could suppress what little is left of his conscience and remorse and make him more animalistic, thats the only true potential i can think of...feeling no pleasure or guilt for what he does just pure instinct and slipping into the red and never coming ack out